Table of contents

1. Introduction to Psychology1h 43m
2. Psychology Research2h 20m
3. Biological Psychology2h 41m
4. Sensation and Perception28m
5. Consciousness and Sleep32m
- Sleep
  32m
6. Learning1h 26m
7. Memory34m
- Information Processing Model
  4m
- Storage - The Three Box Model of Memory
  29m
8. Cognition37m
- The Structure of Language
  12m
- Language Development
  25m
9. Emotion and Motivation35m
10. Developmental Psychology1h 20m
11. Personality1h 17m
12. Social Psychology1h 18m
13. Stress and Health41m
14. Psychological Disorders1h 27m
15. Treatment1h 24m

3. Biological Psychology

Communication in the Nervous System

Psychology

3. Biological Psychology

Communication in the Nervous System

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Multiple Choice

Lately, Kiara has been having trouble sleeping at night, and has also experienced a sharp decline in appetite and energy level. A decrease in which of the following neurotransmitters might be responsible for Kiara's sudden change in behavior?

Dopamine

Serotonin

Endorphins

GABA

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Verified step by step guidance

Understand the role of neurotransmitters: Neurotransmitters are chemical messengers in the brain that play a crucial role in regulating mood, sleep, appetite, and energy levels.

Identify the symptoms: Kiara is experiencing trouble sleeping, a decline in appetite, and low energy levels.

Link symptoms to neurotransmitters: Serotonin is a neurotransmitter that is known to regulate mood, sleep, and appetite. A decrease in serotonin levels can lead to symptoms such as insomnia, reduced appetite, and fatigue.

Consider other neurotransmitters: Dopamine is primarily associated with pleasure and reward, endorphins with pain relief and pleasure, and GABA with reducing neuronal excitability. These do not directly align with Kiara's symptoms.

Conclude the analysis: Based on the symptoms and the roles of the neurotransmitters, a decrease in serotonin is most likely responsible for Kiara's changes in behavior.